What to Include in Brand Guidelines: A Practical Checklist for 2026

Brand guidelines are the document that tells anyone touching your brand how to use it: which logo file goes where, which colours and fonts are allowed, how the brand sounds, and what the photography looks like. A good set covers eight areas: brand foundations, logo, colour, typography, imagery, tone of voice, applications, and file handover. In 2026 we add a ninth, rules for AI tools, because more of your content now passes through one before anyone publishes it.

We deliver brand guidelines at the end of every branding project at Ruler. Below is what we put in them, why each section is there, and the parts that most often go missing.

Why brand guidelines matter more than the logo

The logo is the part people argue about. The guidelines decide whether it still looks right a year later.

Once a new identity leaves the studio, other people use it. A printer sets up packaging, a junior designer builds social templates, a developer picks button colours, a sales manager makes a PowerPoint at 11pm. Every one of them is guessing unless something written tells them otherwise. Small guesses add up: a slightly different blue, a stretched logo, a headline font swapped for whatever was installed. After a year of that, the brand looks like several businesses.

Guidelines stop that drift. They also save money. When the rules are written down, an outside designer or agency can produce on-brand work in one round instead of three.

The brand guidelines checklist

1. Brand foundations

This section is short, a page or two, and it opens the document because every later decision refers back to it.

• Purpose and positioning: what the business does, who it is for, and what makes it different, in plain sentences.
• Values or personality traits: three to five, each with a line explaining what it looks like in practice.
• Tagline, if there is one, and when to use it.

Write it so a new hire understands it on day one. If the positioning only makes sense to the founders, the rest of the document will be applied without the reasoning behind it.

2. Logo usage

This is the section people open most, so it needs the most detail.

• Logo versions: primary, secondary (horizontal or stacked), icon or symbol, and single-colour versions.
• Clear space: the minimum empty area around the logo, usually defined by a part of the mark itself so it scales.
• Minimum size: separate values for print (millimetres) and screen (pixels).
• Backgrounds: which version goes on light, dark, and photographic backgrounds.
• Misuse examples: stretched, recoloured, rotated, with added effects, placed on busy images. Show them visually. People skip a list of don'ts but they notice a picture of their own mistake.

If the identity includes an animated logo, document it here too: duration, where it is used (video intros, website loader, social), and which exported files to use. Several of our recent identities have had motion built in from the start, for example a cybersecurity firm whose mark unfolds as it animates and an engineering company with a 3D motion identity. Neither works well without written rules for when the motion plays and when the static version is used instead.

3. Colour palette

• Primary and secondary colours with values for every medium: HEX and RGB for screens, CMYK for print, Pantone where packaging or signage needs exact matching.
• Proportions: roughly how much of each colour a typical layout uses. A palette without proportions gets applied evenly, and the brand loses its character.
• Accessibility: which text and background combinations meet WCAG contrast requirements. This matters more now that the European Accessibility Act applies to many websites and apps sold in the EU.

4. Typography

• Typefaces for headings, body text, and any accent use, with weights.
• Hierarchy: sizes and spacing for H1 to body text on web, and for common print formats.
• Fallback fonts for email, Office documents, and any system where the brand font cannot be installed.
• Licensing: what the font licence covers (desktop, web, app). This is easy to overlook and becomes a problem once the website goes live.

5. Imagery and graphic elements

• Photography style: lighting, colour treatment, composition, what the subjects are doing. Include good and bad examples side by side.
• Illustration and iconography: style rules, line weights, and where to find the icon set.
• Patterns, shapes, and textures that are part of the identity, with rules for how they are cropped and combined with the logo.

6. Tone of voice

Tone of voice is the section most often left out, or reduced to a single adjective. It needs at least as much space as the logo.

• Voice: the consistent personality (for example: direct, warm, never salesy).
• Tone shifts: how that voice adapts by context. A sales email, a support reply, a social caption, and an apology for a late delivery should all sound like the same company in different moods.
• Word lists: words you use, words you avoid, how you write your own name and product names.
• Before and after examples: rewrite one generic paragraph in your voice. One example teaches more than a page of adjectives.
• Languages: if you operate in Greek and English, as many of our clients do, say how the voice carries across both. Formality differs between the two languages, and a literal translation often sounds stiff.

7. Applications

This section shows the identity in use: business cards, letterheads, email signatures, social media templates, presentation slides, website components, packaging, signage, vehicle graphics, whichever apply.

Mockups here do two jobs. They prove the system works in real formats before money is spent on print, and they give your team a reference to copy. For a supplements client we design packaging one product at a time, and the shared pack system in the guidelines is what lets each new product look like part of the range rather than a separate project.

A PowerPoint or Google Slides master template belongs here too. Sales decks are where brands most often fall apart, because they are built under time pressure by people who are not designers.

8. File handover

The guidelines PDF is not the whole delivery. Include, or link to, an organised asset library:

• Logo files in vector (SVG, EPS, PDF) and raster (PNG) formats, in every colour version.
• Colour swatch files, font files or licence links, icon sets, templates.
• A simple folder structure and naming convention, so people can find the file they need.

We hand over all final formats at the end of a project, because rules that point to files nobody can find get ignored.

The 2026 addition: rules for AI tools

A large share of brand content now passes through an AI tool before it is published: social captions, product descriptions, translations, generated imagery, chatbot replies. If your guidelines only address human designers, you are leaving the most active "designer" on your team without instructions.

We now add a short section that covers:

• A voice brief written for AI: your tone of voice section condensed into instructions you can paste into ChatGPT, Claude, or a custom assistant, with three or four sample texts in the correct voice.
• Imagery rules for generated visuals: palette, mood, lighting, composition, and hard limits (for example, no generated faces of real staff, no fake product shots, no text inside images).
• Review rules: what must be checked by a person before AI output goes live. Factual claims, prices, and anything legal always are.

We work this way ourselves. When we translate client copy with AI agents, the agent gets the brand's tone notes and terminology list before it starts, and a person on our team reviews every translation before it goes to the client.

This also connects to search. AI engines like ChatGPT and Google's AI Overviews build their picture of a brand from what it publishes. If your website, profiles, and content describe what you do in the same words, those systems have an easier time describing you accurately, and the guidelines are where those words get fixed.

Common mistakes we see

• A 60-page PDF nobody opens. Put the most-used rules (logo versions, colours, fonts) in the first few pages. Detail can follow.
• No digital rules. Guidelines written for print often have nothing on button styles, hover states, or how the logo sits in a website header.
• Never updated. A brand changes as the business does. Review the guidelines once a year, and every time a new product, market, or channel is added.
• No owner. Someone inside the company needs to answer "is this on-brand?" Without that person, the document has no authority.

FAQ

How long should brand guidelines be?

Long enough to answer the questions your team actually asks, usually 20 to 40 pages for a small or mid-sized business. A one-page summary of the essentials at the front helps more than extra pages at the back.

What is the difference between brand guidelines and a brand style guide?

People use the terms interchangeably. When they are separated, the style guide covers the visual rules (logo, colour, type), while brand guidelines also cover strategy and tone of voice. We recommend one document that covers both.

Can we create brand guidelines without a full rebrand?

Yes. If your identity works but is being applied inconsistently, documenting what already exists is a quick and inexpensive fix. If writing the rules shows the identity has gaps, such as a logo that fails at small sizes or a palette with no accessible text colour, that tells you a refresh is due.

Should brand guidelines be a PDF or a website?

A PDF works for most small and mid-sized businesses. Larger teams, or brands with frequent digital releases, benefit from an online version that is easier to update and can host downloadable assets alongside the rules.

Getting your guidelines right

Brand guidelines are part of every branding and design project we run, together with logo concepts, motion versions, templates, and the full file handover. We also write the AI section for teams already producing content with AI tools, and our AI services cover setting up those assistants. To see the identities behind the examples above, browse our work. If your brand has drifted, or you have never had guidelines written down, get in touch and we can start with an audit of what you already have.